MerkelCellVulva

Merkel Cell Carcinoma of the Vulva

C51.0-C51.2, C51.8-C51.9

M-8247

C51.0 Labium majus

C51.1 Labium minus

C51.2 Clitoris

C51.8 Overlapping lesion of vulva

C51.9 Vulva, NOS

Note 1: This schema is used for Merkel cell carcinoma only,

Note 2: The AJCC 7th edition stages cancer of the perineum with vulva. Cancer of the perineum can be coded to several different primary site codes each of which includes sites other than perineum. Involvement of the vulva and perineum should be assigned to vulva as the primary site in the absence of a statement that the tumor extended from the perineum to the vulva. Collaborative Stage only includes C51.0-C51.9 (vulva) and does not include primaries of the perineum in this schema. In addition, basal and squamous cell carcinomas of the skin of the perineum would be coded to C44.5 and would not be reportable.